imi Posted November 3, 2010 Share Posted November 3, 2010 ok, so these are instructions of how to remove a functional part of the car to replace it with a useless oil catch tank......am I missing something? what oil catch tank? Quote Link to comment Share on other sites More sharing options...
Shane Posted November 3, 2010 Share Posted November 3, 2010 ok, so these are instructions of how to remove a functional part of the car to replace it with a useless oil catch tank......am I missing something? Yes! Quote Link to comment Share on other sites More sharing options...
imi Posted March 20, 2012 Share Posted March 20, 2012 3 pipes on charcoal canister, listed below with direction of flow. 1 goes to induction vacuum. 1 comes from fuel tank. 1 goes to drain. Remove vacuum pipe from inlet manifold and cap it off. Pipe to fuel tank can be capped, or removed completely and blanked off on tank. Drainpipe can be left open, or removed completely. Simples ! Hi All. I'd appreciate a bit of help, my charcoal canister has been removed and I get a lot of fuel smell when I crank the car at startup. it's been to a few mechanics still this hasn't been resolved and its very frustrating. Attached is a pic of how the pipes are at the moment. You mention THREE pipes, I can only see TWO, would appreciate it if someone can look at the pic and let me know if this is correct or not. Quote Link to comment Share on other sites More sharing options...
imi Posted March 21, 2012 Share Posted March 21, 2012 I've ended up blocking both pipes and it seems to have improved the smell. Will monitor it over the next few days in order for it to be conclusive. Thanks to Scott M for his advice Quote Link to comment Share on other sites More sharing options...
Dim Sum Posted March 21, 2012 Share Posted March 21, 2012 interested, am thinking about doing this myself but never really thought about the smell and what the actual thing do be interested in some solutions and maybe a How to thread with pictures Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted March 28, 2012 Share Posted March 28, 2012 I removed the charcoal canister from my engine bay several months ago. I blocked both the vacuum pipe and the vent from the tank and thought no more of it. I fitted a new fuel pump to the car yesterday. Following the guide, I disconnected the power supply to the pump and cranked the engine for a few seconds to relieve pressure in the system. Then I went to open the pipes on the top of the tank but no matter which pipe I tried disconnecting first petrol kept shooting from it like it was still being pumped! I was expecting a bit of a spray on removal of a pipe but after attempting to remove a pipe about half a dozen times and being met by the same continuous gusher each and every time I figured something was amiss. So I removed to fuel cap with a massive release of pressure which, believe it or not, solved the problem. Believing the cap is supposed to vent excess pressure I had to investigate so I removed the gubbins from the cap to get a clearer picture. Upon inspection I've come to the conclusion that the cap is NOT a vent for excess pressure, the valve in the cap is purely one way only and the only job it has is to allow air INTO the tank to replace spent fuel and so reduces strain on the fuel pump. So with that in mind does anyone think that the vent pipe I/we blocked when the canister was removed should be reinstated as a vent of some kind? Quote Link to comment Share on other sites More sharing options...
little num Posted March 28, 2012 Share Posted March 28, 2012 I have also taken my tank away and obviously blanked the inlet manifold pipe off, then the pipe going to the tank ive run down into the front wheel arch and have never had pressure build up or smell of fuel anytime. Quote Link to comment Share on other sites More sharing options...
imi Posted March 28, 2012 Share Posted March 28, 2012 Ever since I have capped both pipes the fuel smell has improved tremendously. maybe its possible to trace the fuel tank pipe from the engine bay back to the fuel tank and then vent it there. Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted March 28, 2012 Share Posted March 28, 2012 Well if the tank does indeed need a vent, and my pump fitting fiasco would suggest it does, then it would need to be vent properly. A plain pipe for a vent is simply not a good idea. Should the car roll the petrol in the tank has an uninhibited exit point and depending on where the pipe vents it is a good recipe for a disaster. I think I will invest in one of these, it can't hurt. http://www.demon-tweeks.co.uk/motorsport/fuel-tank-vent-valves/mocal-in-tank-breather-valve-3 Quote Link to comment Share on other sites More sharing options...
imi Posted March 28, 2012 Share Posted March 28, 2012 Perhaps removing the charcoal canister was a bad idea Quote Link to comment Share on other sites More sharing options...
mellonman Posted March 29, 2012 Share Posted March 29, 2012 as i went single and the removal i see was for a tt, All i done was just removed it and i dont smell any petrol as had to ditch half the pipes anyway. where does the smell of petrol come from where the canister would sit or the other pipe nearer the bonnet Quote Link to comment Share on other sites More sharing options...
imi Posted April 8, 2012 Share Posted April 8, 2012 I've now fed the tank pipe into the front wheel fender and fitted a breather filter at the end of it. Only driven it once since and seems OK - no smell. Quote Link to comment Share on other sites More sharing options...
David P Posted April 8, 2012 Share Posted April 8, 2012 I have looked into the charcoal canister removal mod, and it appears that no one has thought the job through properly! The Supra fuel tank and pump are designed to operate at a positive pressure of 2psi. The fuel filler cap, is a 2psi relief valve, maintaining pressure on charcoal filter up to 2psi and gently venting excess. Without the pressure drain gurgling through the charcoal filter, the cap has a little more relieving to do. 3 pipes on charcoal canister, listed below with direction of flow. 1 goes to induction vacuum. 1 comes from fuel tank. 1 goes to drain. Remove vacuum pipe from inlet manifold and cap it off. Pipe to fuel tank can be capped, or removed completely and blanked off on tank. Drainpipe can be left open, or removed completely. Simples ! A tidier job and minor weight reduction is made by removing pipes and blanking at source. ANY other plumbing arrangement is a Supra Old Wives Tale and WILL cause 'issues'. ~~~~~~~~~~~~~~~~ # # Supra Old Wives Tale :baa: # :tumble:================== :tumble:============= ~~~~~~~~~~~~~~~~~~~~~~~~ BUSTED Maybe I should have used a few more smiley's? Quote Link to comment Share on other sites More sharing options...
imi Posted April 8, 2012 Share Posted April 8, 2012 Was just concerned about the comments of piping the tank pipe off. Quote Link to comment Share on other sites More sharing options...
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